missing

Thread view:

Enable EMail Alerts

Start New Thread

Thread rating:

Baby Grand - 27 Nov 2004 16:34 GMT

I bought my 97 M model at 36K miles, and have driven it for 4 years. Now
has 88K. On a recent highway trip it started missing when ever I
accelerated, but would smooth out when I let back off the gas. This has
been a gradual onset, but seems to be getting worse. If I start off very
easy with just a slight amount of throttle, it's okay, but any excess
throttle and it drops down to three cylinders. Is this a spark plug thing?
Any ideas? Thanks.

Reply to this Message

Lanny Chambers - 27 Nov 2004 18:00 GMT

> If I start off very
> easy with just a slight amount of throttle, it's okay, but any excess
> throttle and it drops down to three cylinders. Is this a spark plug thing?

Sort of. Start by replacing the plug wires. That may be all you need.

Signature

Lanny Chambers, St. Louis, USA
'94C
the alignment page:
http://www.hummingbirds.net/alignment.html

Reply to this Message

Tom Howlin - 28 Nov 2004 01:59 GMT

> I bought my 97 M model at 36K miles, and have driven it for 4 years. Now
> has 88K. On a recent highway trip it started missing when ever I
[quoted text clipped - 3 lines]
> throttle and it drops down to three cylinders. Is this a spark plug thing?
> Any ideas? Thanks.

How old are your plugs and plug wires? Almost always the cause of what
you are descibing and it will throw a code because of the unburned
hydrocarbons being sent down the exhaust from a misfire. The Miata
needs new plugs and wires about every 36K miles, IMHO.

Tom
92 Red

Reply to this Message